Cephaelin allyl ether and process for making same.



" STATES PATENT Q 'JoHN WALTER MEADER, or INDIANAPOLIS, INDIANA r AssIGNon 'ro THE ELI LILLY AND COMPANY, or INDIANAPOLIS, INDIANA, A CORPORATION.

No Drawing.

- To all whom it concern:

-Be it known that I, J oHN WALTEn MEADER,

a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Cephaelin Allyl Ether and Process for Making Same, of which the following is a specification.

' This invention relates to the previously unknown cephaelin allyl ether, to which may be given the formula C H ,O ,N,'OC H in which the hydrogen of the hydroXyl group of cephaelin-. has been replaced by an allyl group. 7

This compound is a valuable medicinal product. Its uses are similar to those of emetin-and somewhat larger doses than those of that product may be administered owing 'to the less toxicity of the present compound.

This com oun'd may be prepared by treating cephae in withan alkali metal and an allyl haloid and isolating the cephaelin allyl ether by suitable methods. The process in detail may be carried out as-followsz,

46.6 grams of cephaelin and 4.6 grams of sodium are dissolved in about 400 c. c. of.absolute alcohol, about 16 grams of allyl bromid added, and the solution bolled under a reflux condenser for at least two hours.

Cephaelin allyl ether 'which now exists in solution is isolated by 'recoveringthe alcohol, dissolving in dilute hydrochloric acid, making ammoniacal and extracting with ether. The ether solution ofcephaelin allyl ether and unchanged cephaelin is extracted with an excess of dilute caustic soda solution to remove the cephaelin and evaporated to dgness on a water bath. The compound Specification oi. Letters Patent.

' .QEPHAEIJIN ALLYLETH ER AND PROCESS FOR MAKING- SAME.

may be further purified by dissolving in an acid, 'crystallizing as "a salt, dissolving in. water, making ammoniacal, extracting with allyl bromid.- Theabsolute -alcoholinay be Paterited Mar. an, ion. Application filed January 25, 1am. seriaiiwo. 74,257. i

replaced by any other suitable solvent, for

instance amyl alcohol.

Cephaelin allyl other is a varnish like substance easily solublein alcohol, etherya-i'ld- .chloroform. It dissolves in acids to form salts. The hydrobromid of cephaelin allylfi ether crystallizes as white needles. The by drochlorid and nitrate of cephaelin allyl ether are also crystalline.

What I claim is:

1. The allyl ether of cephaelin. p 2. A monoallyl derivative of cephaelin.

6. The process of produc ng an allyl ether v of cephaelin which comprises treating cephaelin with an alkali metal alcoholate and an allyl haloid.

3. An allyl compound of cephaelin con. I

In witness whereof, I, JOHN WALTER I MEADER, have hereunto set my hand at- Indianapolis, Indiana, this 2lth day-of Jang uary, A. D. nineteen. hundred and sixteen.

' 1mm WALTER MEADER. 

